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Free online self-employment tax calculator to estimate SE tax, quarterly payments, and deductible portions. Plan taxes for freelancers and 1099 workers.
Free online W-4 withholding calculator to estimate federal tax withholding and avoid surprises at tax time. Adjust paycheck deductions with confidence.
Free online paycheck calculator to estimate net pay after federal tax, state tax, FICA, and deductions. See your take-home pay per paycheck instantly.
Estimate total annual federal income tax plus self-employment tax based on current tax brackets and self-employment earnings.
Projected Annual Tax = Projected SE Tax + Projected Federal Income TaxThe projected annual tax liability is divided into four equal payments due on April 15, June 15, September 15, and January 15.
Quarterly Estimated Payment = Projected Annual Tax ÷ 4To avoid underpayment penalties, you must pay at least 90% of the current year's tax or 100% (or 110% for high earners) of the prior year's tax.
Safe Harbor Target = Minimum of (Current Tax × 90%) or (Prior Year Tax × 100%)Updated: July 2026
Projecting $60,000 in net self-employment profit, with single filing status and standard deduction.
→ SE tax: ~$8,478; Income tax: ~$3,200; Quarterly payment: ~$2,920
side hustle net profit of $30,000 in addition to primary joint W-2 salaries.
→ Requires adjustments for withholdings; Estimated quarterly payment: ~$1,650
Projecting $150,000 net profit with prior-year tax of $25,000 to apply safe harbor planning.
→ Prior-year safe harbor payment: $6,250/quarter; actual estimated tax: ~$8,900/quarter
The IRS requires self-employed individuals and investors to pay taxes progressively throughout the year via quarterly estimated payments (Form 1040-ES). This calculator determines your estimated quarterly tax vouchers based on your annual income, expenses, and filing status.